Labeda hummer question

[brentdz 3]

I have an old pair of Mission Proto VSI team issue skates laying around. My fav skate i've ever used, fit me like a glove. I really like the forward pitch of these skates as they are the original Hi-lo. I like the tour hummer frame but since I have very narrow feet my feet swim in tour skates. I have a medium hummer chassis that I would like to put on my old vsi skate. I know I have to dremmel out the boot a bit, but besides that how much of a Heel lift would i need to give the skate a bit of a forward pitch like the hi-lo's? Any other problems I may encounter?